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Title

MCM-41-SO3H as an efficient reusable nano-ordered heterogeneous catalyst for the synthesis of divers 1-& 5-substituted 1H-tetrazoles

Pages

 Start Page 1463 | End Page 1473

Keywords

41 
1 
& 5 
[2+3] cycloaddition 

Abstract

 An improved and efficient method for the synthesis of 1-& 5-substituted 1H-tetrazole derivatives has been described in the presence of Nano-ordered MCM-41-SO3H as an effective heterogeneous catalyst. This metal-free protocol, [2+3] cycloaddition of sodium azide to various nitriles or ethyl N-phenyl formimidate intermediate under mild reaction conditions, afford a wide range of 1H-tetrazoles in good to excellent yields. The catalyst was reused for five times without significant loss of catalytic activity.

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